It is normal that in the process that side of our brain that is there to take care of us tells us no... it always speaks loudly. But what would life be without those risks, without those tests where at some point we are climbing confidently because we have self-esteem and confidence that we can achieve anything... right?
I also feel that before growing up there is a great emptiness. Maybe that's what you experience on those summits, up there, looking at everything you let go of to focus on what really matters.
Cheers!